The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 2020
Filed:
Mar. 11, 2016
Hitachi High-technologies Corporation, Tokyo, JP;
Ryuzo Kawabata, Tokyo, JP;
Akihiko Kandori, Tokyo, JP;
Noritake Shizawa, Saitama, JP;
Kenji Yamamoto, Saitama, JP;
Hiroyuki Kanda, Saitama, JP;
Hitachi High-Technologies Corporation, Tokyo, JP;
Abstract
The present invention addresses the problem of checking defects of a rail for a vehicle with a high SN ratio. A detection device () for generating check data related to the defects of a railway rail RR (rail for a vehicle) is provided with an oscillating coil C() and an oscillating coil C() that are disposed on the surface opposite the railway rail RR and generate AC magnetic fields whose directions are opposite to each other, and a receiving coil () that is positioned between or in the vicinity the oscillation coils and that outputs a magnetic field waveform based on the magnetic fields received from the oscillating coils as the check data.